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. 2015 Jan 24;15:8. doi: 10.1186/1471-2415-15-8

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© Zhang et al.; licensee BioMed Central. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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The stability of SMILE surgery. The average of spherical refraction (A) and cylindrical refraction (B) changed with time. The mean value is demonstrated and the error bar illustrates the 95% confidence interval (CI).